Forget Cross-Site Scripting. Forget SQL Injection. If you want to make some serious cash on the Web silently and surreptitiously, you dont need them. You also dont need noisy scanners, sophisticated proxies, 0-days, or ninja level reverse engineering skills — all you need is a Web browser, a clue on what to look for, and a few black hat tricks. Generating affiliate advertising revenue from the Website traffic of others, trade stock using corporation information passively gleaned, inhibit the online purchase of sought after items creating artificial scarcity, and so much more. Activities not technically illegal, only violating terms of service. You may have heard these referred to as business logic flaws, but that name really doesnt do them justice. It sounds so academic and benign in that context when the truth is anything but. These are not the same ol Web hacker attack techniques everyone is familiar with, but the one staring you in the face and missed because gaming a system and making money this way couldnt be that simple. Plus IDS cant detect them and Web application firewalls cant black them. If fact, these types of attacks are so hard to detect (if anyone is actually trying) we arent even sure how widespread their use actually is. Time to pull back the cover and expose whats possible. Jeremiah Grossman Jeremiah Grossman is the founder and CTO of WhiteHat Security, considered a world-renowned expert in Web security, co-founder of the Web Application Security …
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